Answer:
2.50
Step-by-step explanation:
2.50 might be the answer
(a). 8x + y = 20, where (b). y = x2 - 2x + 4
So where y is in equation (a), substitute in the value of y in (b).
8x + (x2 - 2x + 4) = 20
8x + (4) = 20
Get rid of the 4 on both sides (since what you do to one side, you must do to the other)
8x + 4 - 4 = 20 - 4
8x = 16
Get rid of the 8 to leave x on its own
8x ÷ 8 = 16 ÷ 8
x = 2
So now that you have x, find y but substituting in the value you just found (2) into one of the starting equations.
8x + y = 20 where x is 2.
8(2) + y = 20
16 + y = 20
Minus 16 from both sides
y = 20 - 16 = 4
So x is 2 and y is 4
Answer
B
explanation
get the difference between the y valuesand divide it by the difference between the x values
Radius = d/2 = 1.7 in
circumference = πd ≈ 3.14*3.4 in = 10.68 in
Answer: It's A. -7.
Step-by-step explanation: I've attached an Image of my work.
